# NTSB LAX07LA184: Brook Lancair IV-P, N401PT, Parowan, UT, June 2, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 2, 2007, 13:15 local (19:15 UTC) - Place: Parowan, UT - Coordinates: 37.859722, -112.816108 - Nearby events: https://openairdocs.org/map.md?lat=37.8597&lon=-112.8161&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 31, 2008 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 65926 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX07LA184 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65926/pdf - Page: https://openairdocs.org/ntsb/LAX07LA184 ## Probable cause A loss of engine power due to engine inlet icing. Contributing to the accident was the lack of engine inlet anti-icing capability. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - normal - aircraft/equipment inadequate, owner/builder (contributing factor) - weather condition - icing conditions (cause) - induction air ducting - blocked(partial) (cause) - Forced landing, descent - emergency - On ground/water collision with object, landing - roll - terrain condition - ground - object - fence post ## Analysis The pilot was about 1 hour 15 minutes into the flight, and the airplane was cruising at 26,000 feet, when the turbo prop engine lost power with white smoke coming out of the exhaust. About a minute before the pilot had observed what he termed "splats" of moisture on the windscreen. He performed an emergency descent and at 12,500 feet attempted an engine restart. The restart attempt was unsuccessful. He glided to the nearest airport, circled, and performed a power-off landing. The airplane crossed the runway threshold at 120 knots, floated, and touched down at mid field. After touchdown, the airplane continued down the runway, off the end, and into terrain and a fence. The airplane came to rest with the landing gear collapsed. Federal Aviation Administration inspectors examined the airplane, and could not identify any mechanical abnormality with the engine or fuel system. The Pilot Operating Handbook states that an engine relight was possible below 13,000 feet mean sea level, and below 160 knots of airspeed. The pilot could not recall what his airspeed was when he attempted the engine restart. The airplane was not equipped with any type of engine inlet anti-ice or deicing equipment. The pilot did state that he had been in and out of moisture while at his 26,000 feet cruising altitude, but there had been no ice buildup on his wings or windscreen. A technical representative for Lancair stated that a 3/4 blockage of the engine cowling NACA induction scoop might be enough to starve the engine of air and induce a flameout. ## Factual narrative On June 2, 2007, about 1315 mountain daylight time, an amateur built Brook Lancair IV-P, N401PT, made a forced landing following a loss of engine power at Parowan Airport, Parowan, Utah. The private pilot operated the airplane under the provisions of 14 CFR Part 91. The pilot and single passenger were not injured, and the airplane was substantially damaged. Visual meteorological conditions prevailed, and an IFR flight plan had been filed. The flight originated at Deer Valley Airport, Phoenix, Arizona, at 1100, and was en route to Hailey, Idaho. The pilot reported to the National Transportation Safety Board investigator that he was about 1 hour 15 minutes into the flight, and the airplane was cruising at 26,000 feet, when the turbo prop engine quit with white smoke coming out of the exhaust. About a minute before he had observed "splats" of moisture on the windscreen. He performed an emergency descent to 15,000 feet, and at 12,500 feet attempted an engine restart. The restart attempt was unsuccessful. He proceeded to the nearest airport, which was Parowan Airport. He circled and performed a no-power approach to runway 04. The airplane crossed the runway threshold at 120 knots, floated, and touched down at mid field. After touchdown, the airplane continued down the runway, off the end, and into terrain and a fence. The airplane came to rest with the landing gear collapsed. Federal Aviation Administration inspectors examined the airplane at the Parowan Airport. The inspectors determined that the wing vents were clear of debris; the center fuel tank vent was operational; the fuel boost pumps were energized and operated; the fuel system was clean; the engine igniters operated; the engine controls were properly connected to the engine; the engine rotated freely with no binding; and the engine driven fuel pump was operationally checked to function. The Pilot Operating Handbook states that an engine relight was possible below 13,000 feet mean sea level, and below 160 knots of airspeed. The pilot could not recall what his airspeed was when he attempted the engine restart. The airplane was not equipped with any type of engine inlet anti-ice or deicing equipment. The pilot did state that he had been in and out of moisture while at his 26,000 feet cruising altitude, but there had been no ice buildup on his wings or windscreen. A technical representative for Lancair stated that a 3/4 blockage of the cowling NACA induction scoop might be enough to starve the engine of air and induce a flameout. ## Aircraft - Registration: [N401PT](https://openairdocs.org/deregistered/N401PT-2019-05-06), registration cancelled 2019-05-06, S/N LIV-408, built 2002 (OpenAirDocs) - Reported make and model: Brook Lancair IV-P - Registry model: [Brook Aaron D LANCAIR IV-P](https://openairdocs.org/model/brook-aaron-d-lancair-iv-p) (registry code 05613IU) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: LIV-408 - Airframe hours: 860 - Engines: Walter 601E 750 horsepower turbo prop - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, May 1, 2006 - Departed: KDVT, Deer Valley, AZ - Destination: KSUN, Hailey, ID - Flight plan: IFR - Airport: K1L9, Parowan Airport, runway 4, 5,000 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; injuries: none; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3; last flight review May 1, 2007; seat: left; flight hours: 2,422 total, 305 in this make and model, 2,413 as pilot in command, 27 in the last 90 days, 10 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 25 °F - Altimeter: 30.05 inHg - Observed at: KCDC ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20070602008889A](https://openairdocs.org/incident/20070602008889A), Jun 2, 2007: Amtr LANCAIRIVP, Parowan, UT, Substantial damage. (-23)The pilot was on an IFR flight plan cruising at 26000 feet MSL. He encountered some clouds and rain showers over the mountains. The engine ingested some… ## Other investigations on N401PT (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB ERA16FA097](https://openairdocs.org/ntsb/ERA16FA097), Jan 30, 2016: Brook Aaron D Lancair IV P (N401PT), Albany, GA, destroyed, 3 fatal. Probable cause: The pilots' failure to maintain control during a takeoff attempt in a high-performance airplane. Contributing to the accident were the pilots' decision to operate the airplane above its maximum gross… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.